Diseases of the Plum 327 



less kill the spores, whenever it comes in contact with 

 them, and will, by so much, check the spread of the 

 disease. Lodeman tentatively recommends spraying 

 with bordeaux mixture when the buds begin to swell 

 and again just before the blossoms open. These two 

 sprayings correspond with others already recommend- 

 ed. It seems probable also that spraying at the time 

 when the crop of summer spores is ripe, i. e., in May 



PLUM SCAB 



or June, just when the bladders turn gray, would 

 have a salutary effect. 



Scab. Plums are subject to the attacks of a fun- 

 gus which causes a scabbing of the fruits. These 

 scabs are usually confined to small approximately cir- 

 cular areas, which turn gray or brownish and seem 

 to be encrusted with thin dried flakes of skin. I have 

 observed it mostly upon thin-skinned varieties of the 

 Chicasaw, Wildgoose and Wayland groups, though 

 it seems to occur on all sorts of plums. The scab is 



